package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
//        String password =  DigestUtils.md5DigestAsHex(employeeLoginDTO.getPassword().getBytes());
        String password =  employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        //对前端传入过来的密码进行md5加密，禁止明文存储密码
        password =  DigestUtils.md5DigestAsHex(employeeLoginDTO.getPassword().getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /**
     * 新增员工
     */
    @Override
    public void save(EmployeeDTO employeeDTO)
    {
//        Employee employee = new Employee(employeeDTO.getId(),employeeDTO.getUsername(),employeeDTO.getName(), PasswordConstant.DEFAULT_PASSWORD,employeeDTO.getPhone(),employeeDTO.getSex(),employeeDTO.getIdNumber(), StatusConstant.ENABLE, LocalDateTime.now(),LocalDateTime.now(),);
        System.out.println("当前线程的id："+Thread.currentThread().getId());
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);//两个实例对象属性名相同，自动赋值
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));//数据库存储的密码不能是铭文
        employee.setStatus(StatusConstant.ENABLE);
//        employee.setCreateTime(LocalDateTime.now());aop
//        employee.setUpdateTime(LocalDateTime.now());
        //TODO获取当前登录用户的id (已经用aop解决了)
//        employee.setCreateUser(1L);
//        employee.setUpdateUser(1L);
//       employee.setCreateUser(BaseContext.getCurrentId());
//       employee.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.Insert(employee);
        return;

    }

    @Override
    public PageResult page(EmployeePageQueryDTO employeePageQueryDTO)
    {
           PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());
           Page<Employee> page=employeeMapper.page(employeePageQueryDTO);
           PageResult pageresult=new PageResult();
           pageresult.setTotal(page.getTotal());
           pageresult.setRecords(page.getResult());

        return pageresult;
    }

    @Override
    public void StartOrStop(Integer status, Long id) {//幸亏增强的是mapper层，我反射设置的是mapper层的第一个实体类对象
        Employee employee = Employee.builder()
                .id(id)
                .status(status)
                .build();
        employeeMapper.StartOrStop(employee);

    }

    @Override
    public void UpdateEmployee(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();//DTO包含的属性不够啊，表格字段还有个修改时间甚至还有一个修改人。光给mapper传一个DTO不够，传一个employee就够了，那就复制一下属性吧
        BeanUtils.copyProperties(employeeDTO,employee);
//        employee.setUpdateUser(BaseContext.getCurrentId()); AOP解决
//        employee.setUpdateTime(LocalDateTime.now());
        employeeMapper.UpdateEmployee(employee);
    }

    @Override
    public Employee getById(Long id)
    {
     Employee employee = employeeMapper.getById(id);
     return employee;
    }

}
